Push-drill.



PATENTED MAR. 6,- 1906.

Z. T. FURBISH.

PUSH DRILL.

APPLICATION PILPD SEPT. I2. 190s.

illlllllllllllllillll 35 tion b and is slotted longitudinally, ald

' 4o by a tubular casing b2.

UNITED STATES ZACIIRY T. FRBISI-I, F PHILADELPHIA, PENNSYLVANIA, ASSIGNOR 'IO PATENT OFFICE.

NORTH BROTHERS MANUFACTURING COMPANY, OF PHILADELPHIA, PENNSYLVANIA. ACORPORATION 0F PENNSYLVANIA.

PUSH-DRILL.

Specification of Letters Patent.

'ratented March 6, 1966.

Application filed September 12, 1903. Serial No. 172,940.

'1o used and also according to the material to be drilled. y

My invention relates also to other details, which will be fully described hereinafter. v

In the accompanying drawings, Figure l is 1 5 a side view of a push-drill, illustrating myinvention. view. Fig. 3 is a view showing some of the parts detached. Fig. 4 is a transverse sectional view on the line 4 4, Fig. 2. Fig. 5 is a "2o transverse sectional view on the line 5 5, Fig.

2. Fig. 6 is a transverse sectional view on the line 6 6, Fig. 2. Fig. 7 is a view showing the lid of the magazine opened, and Figs. 8, 9, l0, and l are views of modifications.

A is a handle made in two parts a and af.

The part a. is screwed into the part a in the present instance.

B is a' tubular tool-carrier made in two sections b and b. The section b has a series of 3o spiral threads cut thereon, and on the part a of the handle is a nut a2, meshing with lthesaid threads, so that when the handle is pushed` forward the nut will cause the carrier B to turn. The section b is screwed into the secmounted within this section b is a trave nut c, having a tongue c extending intojjv slot, so that the nut cannot turn .in theff's section. The slot in the Sectio C is the chuck of the drill, mad 'anysuitable manner and havin a shankC," which.' enters the ortion b an is held therein by'a key-plate i/which extends intoan annular,`

` groove i in the shank. Extending'from theshankail" the chuck C .isarscreW-stem C2.

This screw-'stem passes throuvh the nut c, so

v that whenlthe chuck is turned inde endently ol thecarrier B it will vshifty the nut ongitudi- 5o nally tov placemore or less tension upon the spring 1),.whichjis`mounted Within. the tool and is for t-h purpose of returning the handle Fig. l" is a longitudinal sectional the lid can be opened and a drill of t size removed from the magazine. elfi` closed g f vand a plain handle used, and the means for clutching the chuck to the carrier B may be l after it is pushed forward and to give nmore or less resistance to the push.

The carrier B is locked to the chuck (l by a sleeve E, which is arranged to slide on Athe portion b of the carrier B, a friction-spring t keeping it in the place to which 'it is adjusted. The sleeve 'E is notched at e', and when the notches are in line with the pins c'l on the chuck the sleeve can be pushed over the. pins` so that the sleeve will lock the chuck to the carrier B. Both the chuck and the carrier will then turn together.

In Figs. S and 9 I have shown a modification of the means for locking the chuck-section to the carrier B. The shank of the chuck is notched in this instance, and a block e2 is attached to a sliding collar e3 and can be moved into and out of engagement with the chuck.

In order to preve'nt the spring I) becoming extends into the end of the carrier B, ns

shown in Fig. 2, and has its opposite endj pointed. This pointed end rests in a socket in the end@3 of the handle. Thus the spring is confined laterally throughout its entire len th.

he section a of the handle in the present instance has a series of pockets g, forming a tool-magazine.

Gis a cap for the magazine, hinged at g to a slide g2 and held in place b a spring-cli g3, which has a projection which enters a ho e in the casing. On depressing this s ring-clip lie propel' fr ItWill-be understood that in some instances the magazine-section may be dispensed with modified without tion. l f j v In Fig. 10 I have shown a modification in which the nut and screware mounted at the handle end of the tool l` this instance the screw C is mountedfin the end of the handle and the slottedguidebis'secured to the handle. The nut c3- can be yadjusted longitudinall y by turning'- the cap G', which is attached to the screw, and can be locked to the handle after adjustment. This construction forms departing'from my inventhe subject of a patent granted to me on the 6th day of June, 1905, numbered 791,767.

In place of the nut for adjusting the spring I may use a sliding block c4, as shown in Fig. 11, having an arm which projects through a slot a3 in the casing of the handle,` the slot being notched at intervals, so that the block c an be adjusted and held in the adjusted position.

It will be seen that when a small drill is used or the material to be drilled is soft I can so turn the chuck that the nut will be moved to give less tension to the spring, and when a large drill is used or hard material is to be drilled then the chuck is turned so as to move the nut to its extreme inward limit, compressing the spring and placing considerable tension upon it. This prevents the breaking or bending of drills and also enables the operator to drill soft or hard material with the same tool.

I claim as my invention- 1. The combination in a push-drill of a hollow handle, a hollow drillcarrier, means whereby the carrier will be turned on the reciprocation of the handle, a spring mounted in the hollow handle and carrier and a longitudinally' adjustable abutment for said spring arrangedl to slide in one of said parts, substantially as described.

2. The combination in a push-drill, .of a handle, a drill-carrier, a nut on one part cngaging a thread on'the other part, a spring mounted between the two parts,a screw-atI- tuated abutment for said spring whereby said spring can be longitudinally adjusted, substantially as described.

3. The combination in a push-drill of a handle, a drill-carrier, means whereby the carrier will be turned on the reciprocation of the handle, a screw on one part, a nutv adjustable on said screw and forming an abut- 'ment, and a spring mounted between the abutment-nut and the other parte, substantially as described.

4. The combination in a push-drill, of a. handle, a nut thereon, a carrier, a screw thereon engaged by the nut, a chuck mounted in the carrier, means for coupling the said chuck to the carrier, a screw on the chuck, a nut on the screw and engaging the carrier, and a spring between the last-mentioned nut and the handle of the drill, substantially as described.

5. The combination in a push-drill, of a handle, a carrier on which the handle slides, a spring for returning the handle, a chuck, a screw attached to t-he chuck, a. nut on the screw forming one bearing for the spring so that when the chuck is turned independently of the carrier it will move the nut and adjust the spring, and means for locking the chuck to the carrier, substantially' as described.

6. The combination in a push-drill, of' a handle, a carrier on which the handle slides, a spring for returning the handle, a chuck, a screw attached to the chuck, a nut on the screw forming one bearing for the spring so that when the chuck is turned independentlyr of the carrier it will move the nut and adjust the spring, a notched sleeve on the carrier, a pin on the chuck arranged to enter the notch of the sleeve, substantially as described.

7. The combination in a push-drill, of a handle, a carrier on which the handle slides, a

spring for returning the handle, a chuck, a screw attached to the chuck, a nut on the screw forming one bearing for the spring so that when the chuck is turned independently of the carrier it will move the nut and adjust the spring, a notched sleeve on the carrier, a pin on the chuck arranged to enter the notch of the sleeve, and a friction-spring for retaining the sleeve in its adjusted position, substantially as described.

8. The combination in a push-drill, ,of a handle made in two parts, a nut on one part of the handle, a two-part carrier, a screwthread on one part oi the carrier engaging the nut on the handle, a slot in the other part of the carrier, a nut traveling in said part and having a pin entering the slot, a spring mounted in the handle and in the carrier and resting against the nut in the carrier, a casing surrounding the slotted portion of the, carrier, a chuck secured to the end of the carrier and having a. screw arranged to pass through the nut in the carrier, and means for locking the chuck to the carrier, substantially as described.

` In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

ZACH RY T. FURBISH Witnesses:

WILL. A. BARR, Jos. H. KLEIN.

TOO 

